Find flights
When to book
FAQs

Cheap flights from Belfast to San Francisco from £287

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — SFO
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Belfast to San Francisco
Explore the most affordable flight options available from Belfast to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2026.

Thu 19/1107:40
BHD
-
SFO
1 stop15h 15m
British Airways
Mon 23/1112:11
SFO
-
BHD
2 stops19h 54m
British Airways
Deal found 17/7£673
Mon 24/820:35
BFS
-
SFO
3 stops47h 25m
Multiple Airlines
Mon 31/811:10
SFO
-
BFS
2 stops16h 05m
Multiple Airlines
Deal found 16/7£777
Mon 31/808:00
BFS
-
SFO
3 stops40h 40m
Multiple Airlines
Mon 7/920:10
SFO
-
BFS
1 stop14h 55m
Multiple Airlines
Deal found 17/7£863
Fri 21/807:20
BFS
-
SFO
3 stops41h 20m
Multiple Airlines
Fri 28/808:10
SFO
-
BFS
2 stops24h 20m
Multiple Airlines
Deal found 14/7£882

Find flight deals from Belfast to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 July 2026.

Round-trip from

£673

One-way from

£287

Popular in

March

Cheapest in

May

Average price

£820
British Airways
  • British Airways
  • 3/12-7/12
  • 2 total stops
  • 32h 25m total
  • Belfast to San Francisco
Search Deals
23/9
  • 23/9
  • 3 total stops
  • 39h 50m total
  • Belfast to San Francisco
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£42 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 July 2026.
Use the filters below to find and compare flights from Belfast to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 3/12

07:40-14:55

1 stop15h 15m

San Francisco

Mon 7/12

17:25-18:35

1 stop17h 10m

£673

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Thu 19/11

07:40-14:55

1 stop15h 15m

San Francisco

Mon 23/11

12:11-16:05

2 stops19h 54m

£673

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 31/8

08:00-16:40

3 stops40h 40m

San Francisco

Mon 7/9

08:30-11:15

2 stops18h 45m

£777

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Mon 24/8

20:35-12:00

3 stops47h 25m

San Francisco

Mon 31/8

11:10-11:15

2 stops16h 05m

£777

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Fri 21/8

07:20-16:40

3 stops41h 20m

San Francisco

Fri 28/8

08:10-16:30

2 stops24h 20m

£882
Cheapest one-way

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Wed 23/9

08:30-16:20

3 stops39h 50m

£287

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 23/9

19:40-13:50

1 stop26h 10m

£426

BelfastSan Francisco

BFS - SFO

BFSSFO

Belfast Intl

Sat 26/12

18:55-14:45

3 stops51h 50m

£459
Fastest single journey

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 23/9

10:05-20:50

2 stops18h 45m

£780

BelfastSan Francisco

BHD - SFO

BHDSFO

Belfast City

Wed 5/8

20:35-13:50

1 stop25h 15m

£3,208

Flights are sorted by cheapest return flights first.

Deals found on 16/7

Sorted by cheapest first

Best time to book a flight from Belfast to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Belfast with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Belfast to San Francisco

No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Belfast to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Belfast?

    Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Belfast. Booking flights from Belfast to San Francisco (SFO) should be relatively easy as there are 0 daily inbound flights from Belfast from 0 different airlines.

  • How long is the flight from Belfast to San Francisco?

    There are many flights that can get you from Belfast to San Francisco in 15h 15m. Fly via British Airways to get the fastest option. Belfast and San Francisco are separated by a distance of 5038 mi.

  • Can I find deals for flights from Belfast to San Francisco that include hotel bookings?

    Yes. In addition to deals on Belfast to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to San Francisco.

  • Can I find deals for business class flights from Belfast to San Francisco?

    Yes. Cheapflights offers flight deals from Belfast to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
San Bruno
Newark
Bodega Bay
South San Francisco
Sunnyvale

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast to San Francisco?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Belfast today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Belfast to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Belfast to San Francisco.

Can Cheapflights find flights from Belfast to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Belfast to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Belfast today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.